IC-TROSA point-to-multipoint optical network system

Abstract

An IC-TROSA point-to-multipoint optical network system includes a point-to-multipoint optical network coupled to a hub device configured to transmit first and second optical signals via respective first and second transmit ports. A subscriber coherent optical transceiver device on a subscriber device is coupled to the point-to-multipoint optical network, and includes a subscriber signal processing subsystem that receives optical signals from the hub device, and determines whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first or second transmit port on the hub device. If configured to receive the optical signals via the first transmit port, the subscriber signal processing subsystem performs first signal processing operations to decode the optical signals. If configured to receive the optical signals via the second transmit port, the subscriber signal processing subsystem performs second signal processing operations to decode the optical signals.

What is claimed is: 
     
       1. An Integrated Coherent Transmit-Receive Optical Sub-Assembly (IC-TROSA) point-to-multipoint optical network system, comprising:
 a point-to-multipoint optical network; 
 a hub device that is coupled to the point-to-multipoint optical network and that is configured to transmit first optical signals via a first transmit port on the hub device, and to transmit second optical signals via a second transmit port on the hub device; 
 a subscriber device; 
 a subscriber coherent optical transceiver device that is included on the subscriber device and that couples the subscriber device to the point-to-multipoint optical network, wherein the subscriber coherent optical transceiver device includes a subscriber signal processing subsystem that is configured to:
 receive, from the hub device via the point-to-multipoint optical network, optical signals; 
 determine whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device; 
 perform, when the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device, first signal processing operations on the optical signals that are based on a first optical phase relationship of information included in the optical signals in order to decode the optical signals; and 
 perform, when the subscriber coherent optical transceiver device is configured to receive the optical signals via the second transmit port on the hub device, second signal processing operations on the optical signals that are based on a second optical phase relationship of information included in the optical signals that is different than the first optical phase relationship in order to decode the optical signals. 
 
 
     
     
       2. The system of  claim 1 , wherein the subscriber signal processing subsystem is configured to determine whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by:
 identifying, in a database that is accessible to the subscriber signal processing subsystem, whether the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device or the second transmit port on the hub device; 
 selecting, when the database identifies that the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device, the first signal processing operations to perform; and 
 selecting, when the database identifies that the subscriber coherent optical transceiver device is coupled to the second transmit port on the hub device, the second signal processing operations to perform. 
 
     
     
       3. The system of  claim 1 , wherein the subscriber signal processing subsystem is configured to determine whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by either:
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the first signal processing operations on the optical signals, and determining that the first signal processing operations have correctly decoded the optical signals; or 
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the second signal processing operations on the optical signals, and determining that the second signal processing operations have incorrectly decoded the optical signals. 
 
     
     
       4. The system of  claim 1 , wherein the subscriber signal processing subsystem is configured to determine whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by either:
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the second signal processing operations on the optical signals, and determining that the second signal processing operations have correctly decoded the optical signals; or 
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the first signal processing operations on the optical signals, and determining that the first signal processing operations have incorrectly decoded the optical signals. 
 
     
     
       5. The system of  claim 1 , wherein the subscriber signal processing subsystem is configured to determine whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by:
 receiving training communications via the point-to-multipoint optical network from the hub device; 
 identifying, based on the training communications, whether the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device or the second transmit port on the hub device; 
 selecting, in response to identifying that the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device, the first signal processing operations to perform; and 
 selecting, in response to identifying that the subscriber coherent optical transceiver device is coupled to the second transmit port on the hub device, the second signal processing operations to perform. 
 
     
     
       6. The system of  claim 1 , wherein:
 the first signal processing operations decode the optical signals based on the first optical phase relationship between a first quadrature and a second quadrature in the optical signals; and 
 the second signal processing operations decode the optical signals based on the second optical phase relationship between the first quadrature and the second quadrature in the optical signals. 
 
     
     
       7. A subscriber coherent optical transceiver device, comprising:
 a processing system; and 
 a memory system that is coupled to the processing system and that include instructions that, when executed by the processing system, cause the processing system to provide a subscriber signal processing engine that is configured to:
 receive, from a hub device via a point-to-multipoint optical network, optical signals; 
 determine whether the processing system is configured to receive the optical signals via a first transmit port on the hub device or a second transmit port on the hub device; 
 perform, when the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device, first signal processing operations on the optical signals that are based on a first optical phase relationship of information included in the optical signals in order to decode the optical signals; and 
 perform, when the subscriber coherent optical transceiver device is configured to receive the optical signals via the second transmit port on the hub device, second signal processing operations on the optical signals that are based on a second optical phase relationship of information included in the optical signals that is different than the first optical phase relationship in order to decode the optical signals. 
 
 
     
     
       8. The subscriber coherent optical transceiver device of  claim 7 , wherein the subscriber signal processing engine is configured to determine whether the processing system is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by:
 identifying, in a database that is accessible to the subscriber signal processing engine, whether the processing system is coupled to the first transmit port on the hub device or the second transmit port on the hub device; 
 selecting, when the database identifies that the processing system is coupled to the first transmit port on the hub device, the first signal processing operations to perform; and 
 selecting, when the database identifies that the processing system is coupled to the second transmit port on the hub device, the second signal processing operations to perform. 
 
     
     
       9. The subscriber coherent optical transceiver device of  claim 7 , wherein the subscriber signal processing engine is configured to determine whether the processing system is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by either:
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the first signal processing operations on the optical signals, and determining that the first signal processing operations have correctly decoded the optical signals; or 
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the second signal processing operations on the optical signals, and determining that the second signal processing operations have incorrectly decoded the optical signals. 
 
     
     
       10. The subscriber coherent optical transceiver device of  claim 7 , wherein the subscriber signal processing engine is configured to determine whether the processing system is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by either:
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the second signal processing operations on the optical signals, and determining that the second signal processing operations have correctly decoded the optical signals; or 
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the first signal processing operations on the optical signals, and determining that the first signal processing operations have incorrectly decoded the optical signals. 
 
     
     
       11. The subscriber coherent optical transceiver device of  claim 7 , wherein the subscriber signal processing engine is configured to determine whether the processing system is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device by:
 receiving training communications via the point-to-multipoint optical network from the hub device; 
 identifying, based on the training communications, whether the processing system is coupled to the first transmit port on the hub device or the second transmit port on the hub device; 
 selecting, in response to identifying that the processing system is coupled to the first transmit port on the hub device, the first signal processing operations to perform; and 
 selecting, in response to identifying that the processing system is coupled to the second transmit port on the hub device, the second signal processing operations to perform. 
 
     
     
       12. The subscriber coherent optical transceiver device of  claim 7 , wherein:
 the first signal processing operations decode the optical signals based on the first optical phase relationship between a first quadrature and a second quadrature in the optical signals; and 
 the second signal processing operations decode the optical signals based on the second optical phase relationship between the first quadrature and the second quadrature in the optical signals. 
 
     
     
       13. The subscriber coherent optical transceiver device of  claim 7 , wherein the subscriber signal processing engine is configured to:
 receive, via the point-to-multipoint optical network, a subscriber signal processing engine update; and 
 process the subscriber signal processing engine update in order to configure the subscriber signal processing engine to perform the second signal processing operations. 
 
     
     
       14. A method for transmitting data via a point-to-multipoint optical network, comprising:
 receiving, by a subscriber coherent optical transceiver device from a hub device via a point-to-multipoint optical network, optical signals; 
 determining, by the subscriber coherent optical transceiver device, whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device; 
 performing, by the subscriber coherent optical transceiver device when the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device, first signal processing operations on the optical signals that are based on a first optical phase relationship of information included in the optical signals in order to decode the optical signals; and 
 performing, by the subscriber coherent optical transceiver device when the subscriber coherent optical transceiver device is configured to receive the optical signals via the second transmit port on the hub device, second signal processing operations on the optical signals that are based on a second optical phase relationship of information included in the optical signals that is different than the first optical phase relationship in order to decode the optical signals. 
 
     
     
       15. The method of  claim 14 , wherein the determining whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device includes:
 identifying, in a database that is accessible to the subscriber coherent optical transceiver device, whether the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device or the second transmit port on the hub device; 
 selecting, when the database identifies that the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device, the first signal processing operations to perform; and 
 selecting, when the database identifies that the subscriber coherent optical transceiver device is coupled to the second transmit port on the hub device, the second signal processing operations to perform. 
 
     
     
       16. The method of  claim 14 , wherein the determining whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device includes either:
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the first signal processing operations on the optical signals, and determining that the first signal processing operations have correctly decoded the optical signals; or 
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the second signal processing operations on the optical signals, and determining that the second signal processing operations have incorrectly decoded the optical signals. 
 
     
     
       17. The method of  claim 14 , wherein the determining whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device includes either:
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the second signal processing operations on the optical signals, and determining that the second signal processing operations have correctly decoded the optical signals; or 
 receiving the optical signals via the point-to-multipoint optical network from the hub device, performing the first signal processing operations on the optical signals, and determining that the first signal processing operations have incorrectly decoded the optical signals. 
 
     
     
       18. The method of  claim 14 , wherein the determining whether the subscriber coherent optical transceiver device is configured to receive the optical signals via the first transmit port on the hub device or the second transmit port on the hub device includes:
 receiving training communications via the point-to-multipoint optical network from the hub device; 
 identifying, based on the training communications, whether the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device or the second transmit port on the hub device; 
 selecting, in response to identifying that the subscriber coherent optical transceiver device is coupled to the first transmit port on the hub device, the first signal processing operations to perform; and 
 selecting, in response to identifying that the subscriber coherent optical transceiver device is coupled to the second transmit port on the hub device, the second signal processing operations to perform. 
 
     
     
       19. The method of  claim 14 , wherein:
 the first signal processing operations decode the optical signals based on the first optical phase relationship between a first quadrature and a second quadrature in the optical signals; and 
 the second signal processing operations decode the optical signals based on the second optical phase relationship between the first quadrature and the second quadrature in the optical signals. 
 
     
     
       20. The method of  claim 14 , further comprising:
 receiving, by the subscriber coherent optical transceiver device via the point-to-multipoint optical network, a subscriber signal processing engine update; and 
 processing, by the subscriber coherent optical transceiver device, the subscriber signal processing engine update in order to configure the subscriber coherent optical transceiver device to perform the second signal processing operations.